Tan Song didn't feel that he was wrong at all. He said, "Only by experiencing hardship can one succeed. Besides, aren't you back to normal now? If we hadn't sent you to that place, you wouldn't have had this opportunity, and you wouldn't have become so smart."
In fact, Tan Song had always wanted to know how Tan Rou had returned to normal. That was because the person who had paid them money told them that Tan Rou would only be stupid for the rest of her life and would never recover. However, Tan Rou became smarter after returning to the Tao family. It was unknown what method the Tao family used.
Liang Lu was a very righteous person. After hearing Tan Rou's self-description, she was angry and heartbroken. Hence, she ran to Tan Song, picked him up, and threw him on the ground twice.